Thermometer



FIG. 1 is a front elevational view of a thermometer showing our new design;

FIG. 2 is a rear elevational view;

FIG. 3 is a left side elevational view;

FIG. 4 is a right side elevational view; and

FIG. 5 is a bottom plan view, with the top plan view being identical thereof. 

The ornamental design for a thermometer, as shown and described. 